Inspection Standard for Metal Cans of Pet Food

 Appearance inspection standard of pet food metal cans:

1）Testing standards for printing of pet food metal cans

 a. In the production of metal cans, if each surface has a flat screen background color, then the production quality needs to check whether the background color is consistent. Some customers have designs in the product that look the same, but in fact The ingredients inside are not the same, which requires caution in each printing workshop.

b. If there is a process recommended to use the process, it is convenient and fast for production efficiency. Some small printing does not buy the process, so you can only do it by yourself, and the leakage prevention should be done according to the principle of light color into dark color. If there is a metallic color under the black letters, it depends on which color is printed first, and do it in the order of priority. I think it is better to make the black letters bigger, because the letters are inherently smaller. If the metal color is made larger, the black letters will be smaller and more unsightly.

c. The problem of ink overprinting. In theory, black can crush other colors, but the actual situation is not. As long as you take more printed sheets and look at it, you will find that many times black overprints will have shadows on different colors ( One dark and one light black), when you encounter this situation, you have to reprint.

d. When we receive a printed file, the first step should be to open the file and check whether the file has missing fonts, missing pictures or text pressed to the picture, the picture is pressed to the text, whether the picture is divided into words, etc. In fact, many people I know this, but there are not many that can be done.

e. Pay special attention to whether the buckle at the bottom of the box will buckle the contents of pet metal cans.

f. Pay attention to the color of the picture of pet metal cans. Let me give you an example: I made a box before. The two sides of the pattern on the side are all a device, and the appearance of the device is gray. One side is the entire device. When I came down, I only took part of the equipment on the other side. Because the angle and light were different, the colors of the two photos were different. As a result, the client asked me to change the colors of the two photos to the same. We should also pay attention.

g. Self-inspection of pet metal cans. After finishing the document, you must self-check before outputting. The metal packaging box is best printed in molding, and it is best to proof the first.

2. The surface of the tinplate box is smooth and clean, the product is clean, there should be no dirt, there should be no sundries in the product, and the product has no serious irritating smell, mildew and other similar problems;

3. The winding line of the product must not be scratched, the body of the tin box must not have edges, corners, and burrs, and the patterns and characters on the surface of the tin box should be free from severe scratches or scratches. The length of the scratch on the front of the product must not be >5mm, the side must not be >10mm and the bottom surface must not be >15mm, and only one piece of 50cm2 is allowed. There must be no scratches that affect the recognition of text and barcode;

4. The metal cans are printed with clear and complete dot patterns, without ghosting and deformation. The pattern, text, and ink color on the surface should be correct, uniform and bright. The pattern and mesh should be clear and layered. The printed pattern and text should be clear and complete, not deformed, free of burrs, bubbles, uneven paint and other undesirable problems;

5. There is no overprinting or missing printing of the iron box pattern. The overprinting of the iron can pattern and text is accurate, and the overprinting inaccuracy is not more than 0.2mm.

 Standards for shape inspection of pet food metal cans

 The winding line of pet food metal cans must not have a scratching feel; the tin-plated layer on the can wall and the sealing edge should be complete, free from shedding or roughness, no obvious scratches and rust, and no leakage caused by blisters. , The shape of the can should be complete, and there should be no deformation such as flat cans or sharp corners. The adhesion of the paint film should not be lower than the level II standard after the paint film is peeled off by the tape. It will not fade, fall off, or wrinkle after cooking.

Safety testing standards for the inner wall paint of pet food metal cans,

Printing inks must comply with FDA standards, and be tested and submitted according to the corresponding standards according to the type of coating (for example, when using epoxy phenolic coatings, they must be tested and submitted according to GB4805).